Imaging current-induced switching of antiferromagnetic domains in CuMnAs

Grzybowski, M.J. and Wadley, P. and Edmonds, K.W. and Beardsley, R. and Hills, Victoria Anne and Campion, R.P. and Gallagher, B.L. and Chauhan, Jasbinder S. and Novák, V. and Jungwirth, T. and Maccherozzi, F. and Dhesi, S.S. (2017) Imaging current-induced switching of antiferromagnetic domains in CuMnAs. Physical Review Letters, 118 (5). 057701/1-057701/5. ISSN 1079-7114

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Abstract

The magnetic order in antiferromagnetic materials is hard to control with external magnetic fields. Using X-ray Magnetic Linear Dichroism microscopy, we show that staggered effective fields generated by electrical current can induce modification of the antiferromagnetic domain structure in microdevices fabricated from a tetragonal CuMnAs thin film. A clear correlation between the average domain orientation and the anisotropy of the electrical resistance is demonstrated, with both showing reproducible switching in response to orthogonally applied current pulses. However, the behavior is inhomogeneous at the submicron level, highlighting the complex nature of the switching process in multi-domain antiferromagnetic films.

Item Type: Article
Additional Information: Imaging Current-Induced Switching of Antiferromagnetic Domains in CuMnAs. M.J. Grzybowski, P. Wadley, K.W. Edmonds, R. Beardsley, V. Hills, R.P. Campion, B.L. Gallagher, J.S. Chauhan, V. Novak, T. Jungwirth, F. Maccherozzi, and S.S. Dhesi, Phys. Rev. Lett. 118, 057701
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
Identification Number: 10.1103/PhysRevLett.118.057701
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Depositing User: Edmonds, Kevin
Date Deposited: 07 Mar 2017 09:24
Last Modified: 13 Oct 2017 01:35
URI: http://eprints.nottingham.ac.uk/id/eprint/41041

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